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mmc_test: use API to check card type
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / mmc / card / mmc_test.c
CommitLineData
88ae600d
PO		 1/*
2 * linux/drivers/mmc/card/mmc_test.c
3 *
0121a982 4 * Copyright 2007-2008 Pierre Ossman
88ae600d
PO		 5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or (at
9 * your option) any later version.
10 */
11
12#include <linux/mmc/core.h>
13#include <linux/mmc/card.h>
14#include <linux/mmc/host.h>
15#include <linux/mmc/mmc.h>
5a0e3ad6 16#include <linux/slab.h>
88ae600d
PO		 17
18#include <linux/scatterlist.h>
fec4dcce 19#include <linux/swap.h> /* For nr_free_buffer_pages() */
88ae600d
PO		 20
21#define RESULT_OK 0
22#define RESULT_FAIL 1
23#define RESULT_UNSUP_HOST 2
24#define RESULT_UNSUP_CARD 3
25
2661081f
PO		 26#define BUFFER_ORDER 2
27#define BUFFER_SIZE (PAGE_SIZE << BUFFER_ORDER)
88ae600d 28
fec4dcce
AH		 29/*
30 * Limit the test area size to the maximum MMC HC erase group size. Note that
31 * the maximum SD allocation unit size is just 4MiB.
32 */
33#define TEST_AREA_MAX_SIZE (128 * 1024 * 1024)
34
64f7120d
AH		 35/**
36 * struct mmc_test_pages - pages allocated by 'alloc_pages()'.
37 * @page: first page in the allocation
38 * @order: order of the number of pages allocated
39 */
40struct mmc_test_pages {
41 struct page *page;
42 unsigned int order;
43};
44
45/**
46 * struct mmc_test_mem - allocated memory.
47 * @arr: array of allocations
48 * @cnt: number of allocations
49 */
50struct mmc_test_mem {
51 struct mmc_test_pages *arr;
52 unsigned int cnt;
53};
54
55/**
56 * struct mmc_test_area - information for performance tests.
64f7120d 57 * @max_sz: test area size (in bytes)
fec4dcce 58 * @dev_addr: address on card at which to do performance tests
c8c8c1bd
AH		 59 * @max_tfr: maximum transfer size allowed by driver (in bytes)
60 * @max_segs: maximum segments allowed by driver in scatterlist @sg
61 * @max_seg_sz: maximum segment size allowed by driver
64f7120d
AH		 62 * @blocks: number of (512 byte) blocks currently mapped by @sg
63 * @sg_len: length of currently mapped scatterlist @sg
64 * @mem: allocated memory
65 * @sg: scatterlist
66 */
67struct mmc_test_area {
fec4dcce 68 unsigned long max_sz;
64f7120d 69 unsigned int dev_addr;
c8c8c1bd 70 unsigned int max_tfr;
64f7120d 71 unsigned int max_segs;
c8c8c1bd 72 unsigned int max_seg_sz;
64f7120d
AH		 73 unsigned int blocks;
74 unsigned int sg_len;
75 struct mmc_test_mem *mem;
76 struct scatterlist *sg;
77};
78
79/**
80 * struct mmc_test_card - test information.
81 * @card: card under test
82 * @scratch: transfer buffer
83 * @buffer: transfer buffer
84 * @highmem: buffer for highmem tests
85 * @area: information for performance tests
86 */
88ae600d
PO		 87struct mmc_test_card {
88 struct mmc_card *card;
89
6b174931 90 u8 scratch[BUFFER_SIZE];
88ae600d 91 u8 *buffer;
2661081f
PO		 92#ifdef CONFIG_HIGHMEM
93 struct page *highmem;
94#endif
64f7120d 95 struct mmc_test_area area;
88ae600d
PO		 96};
97
98/*******************************************************************/
6b174931 99/* General helper functions */
88ae600d
PO		 100/*******************************************************************/
101
6b174931
PO		 102/*
103 * Configure correct block size in card
104 */
88ae600d
PO		 105static int mmc_test_set_blksize(struct mmc_test_card *test, unsigned size)
106{
107 struct mmc_command cmd;
108 int ret;
109
110 cmd.opcode = MMC_SET_BLOCKLEN;
111 cmd.arg = size;
112 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
113 ret = mmc_wait_for_cmd(test->card->host, &cmd, 0);
114 if (ret)
115 return ret;
116
117 return 0;
118}
119
6b174931
PO		 120/*
121 * Fill in the mmc_request structure given a set of transfer parameters.
122 */
123static void mmc_test_prepare_mrq(struct mmc_test_card *test,
124 struct mmc_request *mrq, struct scatterlist *sg, unsigned sg_len,
125 unsigned dev_addr, unsigned blocks, unsigned blksz, int write)
88ae600d 126{
6b174931 127 BUG_ON(!mrq || !mrq->cmd || !mrq->data || !mrq->stop);
88ae600d 128
6b174931
PO		 129 if (blocks > 1) {
130 mrq->cmd->opcode = write ?
131 MMC_WRITE_MULTIPLE_BLOCK : MMC_READ_MULTIPLE_BLOCK;
88ae600d 132 } else {
6b174931
PO		 133 mrq->cmd->opcode = write ?
134 MMC_WRITE_BLOCK : MMC_READ_SINGLE_BLOCK;
88ae600d
PO		 135 }
136
6b174931 137 mrq->cmd->arg = dev_addr;
c286d03c
JK		 138 if (!mmc_card_blockaddr(test->card))
139 mrq->cmd->arg <<= 9;
140
6b174931 141 mrq->cmd->flags = MMC_RSP_R1 | MMC_CMD_ADTC;
88ae600d 142
6b174931
PO		 143 if (blocks == 1)
144 mrq->stop = NULL;
145 else {
146 mrq->stop->opcode = MMC_STOP_TRANSMISSION;
147 mrq->stop->arg = 0;
148 mrq->stop->flags = MMC_RSP_R1B | MMC_CMD_AC;
88ae600d
PO		 149 }
150
6b174931
PO		 151 mrq->data->blksz = blksz;
152 mrq->data->blocks = blocks;
153 mrq->data->flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
154 mrq->data->sg = sg;
155 mrq->data->sg_len = sg_len;
88ae600d 156
6b174931
PO		 157 mmc_set_data_timeout(mrq->data, test->card);
158}
88ae600d 159
64f7120d
AH		 160static int mmc_test_busy(struct mmc_command *cmd)
161{
162 return !(cmd->resp[0] & R1_READY_FOR_DATA) ||
163 (R1_CURRENT_STATE(cmd->resp[0]) == 7);
164}
165
6b174931
PO		 166/*
167 * Wait for the card to finish the busy state
168 */
169static int mmc_test_wait_busy(struct mmc_test_card *test)
170{
171 int ret, busy;
172 struct mmc_command cmd;
88ae600d
PO		 173
174 busy = 0;
175 do {
88ae600d
PO		 176 memset(&cmd, 0, sizeof(struct mmc_command));
177
178 cmd.opcode = MMC_SEND_STATUS;
179 cmd.arg = test->card->rca << 16;
180 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
181
6b174931
PO		 182 ret = mmc_wait_for_cmd(test->card->host, &cmd, 0);
183 if (ret)
88ae600d
PO		 184 break;
185
64f7120d 186 if (!busy && mmc_test_busy(&cmd)) {
88ae600d
PO		 187 busy = 1;
188 printk(KERN_INFO "%s: Warning: Host did not "
189 "wait for busy state to end.\n",
190 mmc_hostname(test->card->host));
191 }
64f7120d 192 } while (mmc_test_busy(&cmd));
88ae600d
PO		 193
194 return ret;
195}
196
6b174931
PO		 197/*
198 * Transfer a single sector of kernel addressable data
199 */
200static int mmc_test_buffer_transfer(struct mmc_test_card *test,
201 u8 *buffer, unsigned addr, unsigned blksz, int write)
88ae600d 202{
6b174931
PO		 203 int ret;
204
205 struct mmc_request mrq;
206 struct mmc_command cmd;
207 struct mmc_command stop;
208 struct mmc_data data;
209
210 struct scatterlist sg;
211
212 memset(&mrq, 0, sizeof(struct mmc_request));
213 memset(&cmd, 0, sizeof(struct mmc_command));
214 memset(&data, 0, sizeof(struct mmc_data));
215 memset(&stop, 0, sizeof(struct mmc_command));
216
217 mrq.cmd = &cmd;
218 mrq.data = &data;
219 mrq.stop = &stop;
220
221 sg_init_one(&sg, buffer, blksz);
222
223 mmc_test_prepare_mrq(test, &mrq, &sg, 1, addr, 1, blksz, write);
224
225 mmc_wait_for_req(test->card->host, &mrq);
226
227 if (cmd.error)
228 return cmd.error;
229 if (data.error)
230 return data.error;
231
232 ret = mmc_test_wait_busy(test);
233 if (ret)
234 return ret;
235
236 return 0;
88ae600d
PO		 237}
238
64f7120d
AH		 239static void mmc_test_free_mem(struct mmc_test_mem *mem)
240{
241 if (!mem)
242 return;
243 while (mem->cnt--)
244 __free_pages(mem->arr[mem->cnt].page,
245 mem->arr[mem->cnt].order);
246 kfree(mem->arr);
247 kfree(mem);
248}
249
250/*
251 * Allocate a lot of memory, preferrably max_sz but at least min_sz. In case
c8c8c1bd
AH		 252 * there isn't much memory do not exceed 1/16th total lowmem pages. Also do
253 * not exceed a maximum number of segments and try not to make segments much
254 * bigger than maximum segment size.
64f7120d 255 */
fec4dcce 256static struct mmc_test_mem *mmc_test_alloc_mem(unsigned long min_sz,
c8c8c1bd
AH		 257 unsigned long max_sz,
258 unsigned int max_segs,
259 unsigned int max_seg_sz)
64f7120d 260{
fec4dcce
AH		 261 unsigned long max_page_cnt = DIV_ROUND_UP(max_sz, PAGE_SIZE);
262 unsigned long min_page_cnt = DIV_ROUND_UP(min_sz, PAGE_SIZE);
c8c8c1bd 263 unsigned long max_seg_page_cnt = DIV_ROUND_UP(max_seg_sz, PAGE_SIZE);
fec4dcce
AH		 264 unsigned long page_cnt = 0;
265 unsigned long limit = nr_free_buffer_pages() >> 4;
64f7120d 266 struct mmc_test_mem *mem;
64f7120d 267
fec4dcce
AH		 268 if (max_page_cnt > limit)
269 max_page_cnt = limit;
64f7120d
AH		 270 if (max_page_cnt < min_page_cnt)
271 max_page_cnt = min_page_cnt;
272
c8c8c1bd
AH		 273 if (max_seg_page_cnt > max_page_cnt)
274 max_seg_page_cnt = max_page_cnt;
275
276 if (max_segs > max_page_cnt)
277 max_segs = max_page_cnt;
278
64f7120d
AH		 279 mem = kzalloc(sizeof(struct mmc_test_mem), GFP_KERNEL);
280 if (!mem)
281 return NULL;
282
c8c8c1bd 283 mem->arr = kzalloc(sizeof(struct mmc_test_pages) * max_segs,
64f7120d
AH		 284 GFP_KERNEL);
285 if (!mem->arr)
286 goto out_free;
287
288 while (max_page_cnt) {
289 struct page *page;
290 unsigned int order;
291 gfp_t flags = GFP_KERNEL | GFP_DMA | __GFP_NOWARN |
292 __GFP_NORETRY;
293
c8c8c1bd 294 order = get_order(max_seg_page_cnt << PAGE_SHIFT);
64f7120d
AH		 295 while (1) {
296 page = alloc_pages(flags, order);
297 if (page || !order)
298 break;
299 order -= 1;
300 }
301 if (!page) {
302 if (page_cnt < min_page_cnt)
303 goto out_free;
304 break;
305 }
306 mem->arr[mem->cnt].page = page;
307 mem->arr[mem->cnt].order = order;
308 mem->cnt += 1;
fec4dcce
AH		 309 if (max_page_cnt <= (1UL << order))
310 break;
c8c8c1bd
AH		 311 if (mem->cnt >= max_segs) {
312 if (page_cnt < min_page_cnt)
313 goto out_free;
314 break;
315 }
fec4dcce
AH		 316 max_page_cnt -= 1UL << order;
317 page_cnt += 1UL << order;
64f7120d
AH		 318 }
319
320 return mem;
321
322out_free:
323 mmc_test_free_mem(mem);
324 return NULL;
325}
326
327/*
328 * Map memory into a scatterlist. Optionally allow the same memory to be
329 * mapped more than once.
330 */
fec4dcce 331static int mmc_test_map_sg(struct mmc_test_mem *mem, unsigned long sz,
64f7120d 332 struct scatterlist *sglist, int repeat,
c8c8c1bd
AH		 333 unsigned int max_segs, unsigned int max_seg_sz,
334 unsigned int *sg_len)
64f7120d
AH		 335{
336 struct scatterlist *sg = NULL;
337 unsigned int i;
338
339 sg_init_table(sglist, max_segs);
340
341 *sg_len = 0;
342 do {
343 for (i = 0; i < mem->cnt; i++) {
fec4dcce 344 unsigned long len = PAGE_SIZE << mem->arr[i].order;
64f7120d 345
c8c8c1bd 346 if (len > sz)
64f7120d 347 len = sz;
c8c8c1bd
AH		 348 if (len > max_seg_sz)
349 len = max_seg_sz;
64f7120d
AH		 350 if (sg)
351 sg = sg_next(sg);
352 else
353 sg = sglist;
354 if (!sg)
355 return -EINVAL;
356 sg_set_page(sg, mem->arr[i].page, len, 0);
357 sz -= len;
358 *sg_len += 1;
359 if (!sz)
360 break;
361 }
362 } while (sz && repeat);
363
364 if (sz)
365 return -EINVAL;
366
367 if (sg)
368 sg_mark_end(sg);
369
370 return 0;
371}
372
373/*
374 * Map memory into a scatterlist so that no pages are contiguous. Allow the
375 * same memory to be mapped more than once.
376 */
377static int mmc_test_map_sg_max_scatter(struct mmc_test_mem *mem,
fec4dcce 378 unsigned long sz,
64f7120d
AH		 379 struct scatterlist *sglist,
380 unsigned int max_segs,
c8c8c1bd 381 unsigned int max_seg_sz,
64f7120d
AH		 382 unsigned int *sg_len)
383{
384 struct scatterlist *sg = NULL;
fec4dcce
AH		 385 unsigned int i = mem->cnt, cnt;
386 unsigned long len;
64f7120d
AH		 387 void *base, *addr, *last_addr = NULL;
388
389 sg_init_table(sglist, max_segs);
390
391 *sg_len = 0;
c8c8c1bd 392 while (sz) {
64f7120d
AH		 393 base = page_address(mem->arr[--i].page);
394 cnt = 1 << mem->arr[i].order;
395 while (sz && cnt) {
396 addr = base + PAGE_SIZE * --cnt;
397 if (last_addr && last_addr + PAGE_SIZE == addr)
398 continue;
399 last_addr = addr;
400 len = PAGE_SIZE;
c8c8c1bd
AH		 401 if (len > max_seg_sz)
402 len = max_seg_sz;
403 if (len > sz)
64f7120d
AH		 404 len = sz;
405 if (sg)
406 sg = sg_next(sg);
407 else
408 sg = sglist;
409 if (!sg)
410 return -EINVAL;
411 sg_set_page(sg, virt_to_page(addr), len, 0);
412 sz -= len;
413 *sg_len += 1;
414 }
c8c8c1bd
AH		 415 if (i == 0)
416 i = mem->cnt;
64f7120d
AH		 417 }
418
419 if (sg)
420 sg_mark_end(sg);
421
422 return 0;
423}
424
425/*
426 * Calculate transfer rate in bytes per second.
427 */
428static unsigned int mmc_test_rate(uint64_t bytes, struct timespec *ts)
429{
430 uint64_t ns;
431
432 ns = ts->tv_sec;
433 ns *= 1000000000;
434 ns += ts->tv_nsec;
435
436 bytes *= 1000000000;
437
438 while (ns > UINT_MAX) {
439 bytes >>= 1;
440 ns >>= 1;
441 }
442
443 if (!ns)
444 return 0;
445
446 do_div(bytes, (uint32_t)ns);
447
448 return bytes;
449}
450
451/*
452 * Print the transfer rate.
453 */
454static void mmc_test_print_rate(struct mmc_test_card *test, uint64_t bytes,
455 struct timespec *ts1, struct timespec *ts2)
456{
457 unsigned int rate, sectors = bytes >> 9;
458 struct timespec ts;
459
460 ts = timespec_sub(*ts2, *ts1);
461
462 rate = mmc_test_rate(bytes, &ts);
463
464 printk(KERN_INFO "%s: Transfer of %u sectors (%u%s KiB) took %lu.%09lu "
465 "seconds (%u kB/s, %u KiB/s)\n",
466 mmc_hostname(test->card->host), sectors, sectors >> 1,
467 (sectors == 1 ? ".5" : ""), (unsigned long)ts.tv_sec,
468 (unsigned long)ts.tv_nsec, rate / 1000, rate / 1024);
469}
470
471/*
472 * Print the average transfer rate.
473 */
474static void mmc_test_print_avg_rate(struct mmc_test_card *test, uint64_t bytes,
475 unsigned int count, struct timespec *ts1,
476 struct timespec *ts2)
477{
478 unsigned int rate, sectors = bytes >> 9;
479 uint64_t tot = bytes * count;
480 struct timespec ts;
481
482 ts = timespec_sub(*ts2, *ts1);
483
484 rate = mmc_test_rate(tot, &ts);
485
486 printk(KERN_INFO "%s: Transfer of %u x %u sectors (%u x %u%s KiB) took "
487 "%lu.%09lu seconds (%u kB/s, %u KiB/s)\n",
488 mmc_hostname(test->card->host), count, sectors, count,
489 sectors >> 1, (sectors == 1 ? ".5" : ""),
490 (unsigned long)ts.tv_sec, (unsigned long)ts.tv_nsec,
491 rate / 1000, rate / 1024);
492}
493
494/*
495 * Return the card size in sectors.
496 */
497static unsigned int mmc_test_capacity(struct mmc_card *card)
498{
499 if (!mmc_card_sd(card) && mmc_card_blockaddr(card))
500 return card->ext_csd.sectors;
501 else
502 return card->csd.capacity << (card->csd.read_blkbits - 9);
503}
504
6b174931
PO		 505/*******************************************************************/
506/* Test preparation and cleanup */
507/*******************************************************************/
508
509/*
510 * Fill the first couple of sectors of the card with known data
511 * so that bad reads/writes can be detected
512 */
513static int __mmc_test_prepare(struct mmc_test_card *test, int write)
88ae600d
PO		 514{
515 int ret, i;
516
517 ret = mmc_test_set_blksize(test, 512);
518 if (ret)
519 return ret;
520
521 if (write)
6b174931 522 memset(test->buffer, 0xDF, 512);
88ae600d 523 else {
6b174931 524 for (i = 0;i < 512;i++)
88ae600d
PO		 525 test->buffer[i] = i;
526 }
527
528 for (i = 0;i < BUFFER_SIZE / 512;i++) {
c286d03c 529 ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1);
88ae600d
PO		 530 if (ret)
531 return ret;
532 }
533
534 return 0;
535}
536
6b174931
PO		 537static int mmc_test_prepare_write(struct mmc_test_card *test)
538{
539 return __mmc_test_prepare(test, 1);
540}
541
542static int mmc_test_prepare_read(struct mmc_test_card *test)
543{
544 return __mmc_test_prepare(test, 0);
545}
546
547static int mmc_test_cleanup(struct mmc_test_card *test)
548{
549 int ret, i;
550
551 ret = mmc_test_set_blksize(test, 512);
552 if (ret)
553 return ret;
554
555 memset(test->buffer, 0, 512);
556
557 for (i = 0;i < BUFFER_SIZE / 512;i++) {
c286d03c 558 ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1);
6b174931
PO		 559 if (ret)
560 return ret;
561 }
562
563 return 0;
564}
565
566/*******************************************************************/
567/* Test execution helpers */
568/*******************************************************************/
569
570/*
571 * Modifies the mmc_request to perform the "short transfer" tests
572 */
573static void mmc_test_prepare_broken_mrq(struct mmc_test_card *test,
574 struct mmc_request *mrq, int write)
575{
576 BUG_ON(!mrq || !mrq->cmd || !mrq->data);
577
578 if (mrq->data->blocks > 1) {
579 mrq->cmd->opcode = write ?
580 MMC_WRITE_BLOCK : MMC_READ_SINGLE_BLOCK;
581 mrq->stop = NULL;
582 } else {
583 mrq->cmd->opcode = MMC_SEND_STATUS;
584 mrq->cmd->arg = test->card->rca << 16;
585 }
586}
587
588/*
589 * Checks that a normal transfer didn't have any errors
590 */
591static int mmc_test_check_result(struct mmc_test_card *test,
592 struct mmc_request *mrq)
88ae600d 593{
6b174931
PO		 594 int ret;
595
596 BUG_ON(!mrq || !mrq->cmd || !mrq->data);
597
598 ret = 0;
599
600 if (!ret && mrq->cmd->error)
601 ret = mrq->cmd->error;
602 if (!ret && mrq->data->error)
603 ret = mrq->data->error;
604 if (!ret && mrq->stop && mrq->stop->error)
605 ret = mrq->stop->error;
606 if (!ret && mrq->data->bytes_xfered !=
607 mrq->data->blocks * mrq->data->blksz)
608 ret = RESULT_FAIL;
609
610 if (ret == -EINVAL)
611 ret = RESULT_UNSUP_HOST;
612
613 return ret;
88ae600d
PO		 614}
615
6b174931
PO		 616/*
617 * Checks that a "short transfer" behaved as expected
618 */
619static int mmc_test_check_broken_result(struct mmc_test_card *test,
620 struct mmc_request *mrq)
88ae600d 621{
6b174931
PO		 622 int ret;
623
624 BUG_ON(!mrq || !mrq->cmd || !mrq->data);
625
626 ret = 0;
627
628 if (!ret && mrq->cmd->error)
629 ret = mrq->cmd->error;
630 if (!ret && mrq->data->error == 0)
631 ret = RESULT_FAIL;
632 if (!ret && mrq->data->error != -ETIMEDOUT)
633 ret = mrq->data->error;
634 if (!ret && mrq->stop && mrq->stop->error)
635 ret = mrq->stop->error;
636 if (mrq->data->blocks > 1) {
637 if (!ret && mrq->data->bytes_xfered > mrq->data->blksz)
638 ret = RESULT_FAIL;
639 } else {
640 if (!ret && mrq->data->bytes_xfered > 0)
641 ret = RESULT_FAIL;
642 }
643
644 if (ret == -EINVAL)
645 ret = RESULT_UNSUP_HOST;
646
647 return ret;
88ae600d
PO		 648}
649
6b174931
PO		 650/*
651 * Tests a basic transfer with certain parameters
652 */
653static int mmc_test_simple_transfer(struct mmc_test_card *test,
654 struct scatterlist *sg, unsigned sg_len, unsigned dev_addr,
655 unsigned blocks, unsigned blksz, int write)
88ae600d 656{
6b174931
PO		 657 struct mmc_request mrq;
658 struct mmc_command cmd;
659 struct mmc_command stop;
660 struct mmc_data data;
88ae600d 661
6b174931
PO		 662 memset(&mrq, 0, sizeof(struct mmc_request));
663 memset(&cmd, 0, sizeof(struct mmc_command));
664 memset(&data, 0, sizeof(struct mmc_data));
665 memset(&stop, 0, sizeof(struct mmc_command));
666
667 mrq.cmd = &cmd;
668 mrq.data = &data;
669 mrq.stop = &stop;
670
671 mmc_test_prepare_mrq(test, &mrq, sg, sg_len, dev_addr,
672 blocks, blksz, write);
673
674 mmc_wait_for_req(test->card->host, &mrq);
88ae600d 675
6b174931
PO		 676 mmc_test_wait_busy(test);
677
678 return mmc_test_check_result(test, &mrq);
679}
680
681/*
682 * Tests a transfer where the card will fail completely or partly
683 */
684static int mmc_test_broken_transfer(struct mmc_test_card *test,
685 unsigned blocks, unsigned blksz, int write)
686{
687 struct mmc_request mrq;
688 struct mmc_command cmd;
689 struct mmc_command stop;
690 struct mmc_data data;
691
692 struct scatterlist sg;
693
694 memset(&mrq, 0, sizeof(struct mmc_request));
695 memset(&cmd, 0, sizeof(struct mmc_command));
696 memset(&data, 0, sizeof(struct mmc_data));
697 memset(&stop, 0, sizeof(struct mmc_command));
698
699 mrq.cmd = &cmd;
700 mrq.data = &data;
701 mrq.stop = &stop;
702
703 sg_init_one(&sg, test->buffer, blocks * blksz);
704
705 mmc_test_prepare_mrq(test, &mrq, &sg, 1, 0, blocks, blksz, write);
706 mmc_test_prepare_broken_mrq(test, &mrq, write);
707
708 mmc_wait_for_req(test->card->host, &mrq);
709
710 mmc_test_wait_busy(test);
711
712 return mmc_test_check_broken_result(test, &mrq);
713}
714
715/*
716 * Does a complete transfer test where data is also validated
717 *
718 * Note: mmc_test_prepare() must have been done before this call
719 */
720static int mmc_test_transfer(struct mmc_test_card *test,
721 struct scatterlist *sg, unsigned sg_len, unsigned dev_addr,
722 unsigned blocks, unsigned blksz, int write)
723{
724 int ret, i;
725 unsigned long flags;
88ae600d
PO		 726
727 if (write) {
728 for (i = 0;i < blocks * blksz;i++)
6b174931
PO		 729 test->scratch[i] = i;
730 } else {
b7ac2cf1 731 memset(test->scratch, 0, BUFFER_SIZE);
88ae600d 732 }
6b174931 733 local_irq_save(flags);
b7ac2cf1 734 sg_copy_from_buffer(sg, sg_len, test->scratch, BUFFER_SIZE);
6b174931 735 local_irq_restore(flags);
88ae600d
PO		 736
737 ret = mmc_test_set_blksize(test, blksz);
738 if (ret)
739 return ret;
740
6b174931
PO		 741 ret = mmc_test_simple_transfer(test, sg, sg_len, dev_addr,
742 blocks, blksz, write);
88ae600d
PO		 743 if (ret)
744 return ret;
745
746 if (write) {
6b174931
PO		 747 int sectors;
748
88ae600d
PO		 749 ret = mmc_test_set_blksize(test, 512);
750 if (ret)
751 return ret;
752
753 sectors = (blocks * blksz + 511) / 512;
754 if ((sectors * 512) == (blocks * blksz))
755 sectors++;
756
757 if ((sectors * 512) > BUFFER_SIZE)
758 return -EINVAL;
759
760 memset(test->buffer, 0, sectors * 512);
761
762 for (i = 0;i < sectors;i++) {
6b174931 763 ret = mmc_test_buffer_transfer(test,
88ae600d 764 test->buffer + i * 512,
c286d03c 765 dev_addr + i, 512, 0);
88ae600d
PO		 766 if (ret)
767 return ret;
768 }
769
770 for (i = 0;i < blocks * blksz;i++) {
771 if (test->buffer[i] != (u8)i)
772 return RESULT_FAIL;
773 }
774
775 for (;i < sectors * 512;i++) {
776 if (test->buffer[i] != 0xDF)
777 return RESULT_FAIL;
778 }
779 } else {
6b174931 780 local_irq_save(flags);
b7ac2cf1 781 sg_copy_to_buffer(sg, sg_len, test->scratch, BUFFER_SIZE);
6b174931 782 local_irq_restore(flags);
88ae600d 783 for (i = 0;i < blocks * blksz;i++) {
6b174931 784 if (test->scratch[i] != (u8)i)
88ae600d
PO		 785 return RESULT_FAIL;
786 }
787 }
788
789 return 0;
790}
791
88ae600d
PO		 792/*******************************************************************/
793/* Tests */
794/*******************************************************************/
795
796struct mmc_test_case {
797 const char *name;
798
799 int (*prepare)(struct mmc_test_card *);
800 int (*run)(struct mmc_test_card *);
801 int (*cleanup)(struct mmc_test_card *);
802};
803
804static int mmc_test_basic_write(struct mmc_test_card *test)
805{
806 int ret;
6b174931 807 struct scatterlist sg;
88ae600d
PO		 808
809 ret = mmc_test_set_blksize(test, 512);
810 if (ret)
811 return ret;
812
6b174931
PO		 813 sg_init_one(&sg, test->buffer, 512);
814
815 ret = mmc_test_simple_transfer(test, &sg, 1, 0, 1, 512, 1);
88ae600d
PO		 816 if (ret)
817 return ret;
818
819 return 0;
820}
821
822static int mmc_test_basic_read(struct mmc_test_card *test)
823{
824 int ret;
6b174931 825 struct scatterlist sg;
88ae600d
PO		 826
827 ret = mmc_test_set_blksize(test, 512);
828 if (ret)
829 return ret;
830
6b174931
PO		 831 sg_init_one(&sg, test->buffer, 512);
832
58a5dd3e 833 ret = mmc_test_simple_transfer(test, &sg, 1, 0, 1, 512, 0);
88ae600d
PO		 834 if (ret)
835 return ret;
836
837 return 0;
838}
839
840static int mmc_test_verify_write(struct mmc_test_card *test)
841{
842 int ret;
6b174931
PO		 843 struct scatterlist sg;
844
845 sg_init_one(&sg, test->buffer, 512);
88ae600d 846
6b174931 847 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1);
88ae600d
PO		 848 if (ret)
849 return ret;
850
851 return 0;
852}
853
854static int mmc_test_verify_read(struct mmc_test_card *test)
855{
856 int ret;
6b174931
PO		 857 struct scatterlist sg;
858
859 sg_init_one(&sg, test->buffer, 512);
88ae600d 860
6b174931 861 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0);
88ae600d
PO		 862 if (ret)
863 return ret;
864
865 return 0;
866}
867
868static int mmc_test_multi_write(struct mmc_test_card *test)
869{
870 int ret;
871 unsigned int size;
6b174931 872 struct scatterlist sg;
88ae600d
PO		 873
874 if (test->card->host->max_blk_count == 1)
875 return RESULT_UNSUP_HOST;
876
877 size = PAGE_SIZE * 2;
878 size = min(size, test->card->host->max_req_size);
879 size = min(size, test->card->host->max_seg_size);
880 size = min(size, test->card->host->max_blk_count * 512);
881
882 if (size < 1024)
883 return RESULT_UNSUP_HOST;
884
6b174931
PO		 885 sg_init_one(&sg, test->buffer, size);
886
887 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1);
88ae600d
PO		 888 if (ret)
889 return ret;
890
891 return 0;
892}
893
894static int mmc_test_multi_read(struct mmc_test_card *test)
895{
896 int ret;
897 unsigned int size;
6b174931 898 struct scatterlist sg;
88ae600d
PO		 899
900 if (test->card->host->max_blk_count == 1)
901 return RESULT_UNSUP_HOST;
902
903 size = PAGE_SIZE * 2;
904 size = min(size, test->card->host->max_req_size);
905 size = min(size, test->card->host->max_seg_size);
906 size = min(size, test->card->host->max_blk_count * 512);
907
908 if (size < 1024)
909 return RESULT_UNSUP_HOST;
910
6b174931
PO		 911 sg_init_one(&sg, test->buffer, size);
912
913 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0);
88ae600d
PO		 914 if (ret)
915 return ret;
916
917 return 0;
918}
919
920static int mmc_test_pow2_write(struct mmc_test_card *test)
921{
922 int ret, i;
6b174931 923 struct scatterlist sg;
88ae600d
PO		 924
925 if (!test->card->csd.write_partial)
926 return RESULT_UNSUP_CARD;
927
928 for (i = 1; i < 512;i <<= 1) {
6b174931
PO		 929 sg_init_one(&sg, test->buffer, i);
930 ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 1);
88ae600d
PO		 931 if (ret)
932 return ret;
933 }
934
935 return 0;
936}
937
938static int mmc_test_pow2_read(struct mmc_test_card *test)
939{
940 int ret, i;
6b174931 941 struct scatterlist sg;
88ae600d
PO		 942
943 if (!test->card->csd.read_partial)
944 return RESULT_UNSUP_CARD;
945
946 for (i = 1; i < 512;i <<= 1) {
6b174931
PO		 947 sg_init_one(&sg, test->buffer, i);
948 ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 0);
88ae600d
PO		 949 if (ret)
950 return ret;
951 }
952
953 return 0;
954}
955
956static int mmc_test_weird_write(struct mmc_test_card *test)
957{
958 int ret, i;
6b174931 959 struct scatterlist sg;
88ae600d
PO		 960
961 if (!test->card->csd.write_partial)
962 return RESULT_UNSUP_CARD;
963
964 for (i = 3; i < 512;i += 7) {
6b174931
PO		 965 sg_init_one(&sg, test->buffer, i);
966 ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 1);
88ae600d
PO		 967 if (ret)
968 return ret;
969 }
970
971 return 0;
972}
973
974static int mmc_test_weird_read(struct mmc_test_card *test)
975{
976 int ret, i;
6b174931 977 struct scatterlist sg;
88ae600d
PO		 978
979 if (!test->card->csd.read_partial)
980 return RESULT_UNSUP_CARD;
981
982 for (i = 3; i < 512;i += 7) {
6b174931
PO		 983 sg_init_one(&sg, test->buffer, i);
984 ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 0);
88ae600d
PO		 985 if (ret)
986 return ret;
987 }
988
989 return 0;
990}
991
992static int mmc_test_align_write(struct mmc_test_card *test)
993{
994 int ret, i;
6b174931 995 struct scatterlist sg;
88ae600d
PO		 996
997 for (i = 1;i < 4;i++) {
6b174931
PO		 998 sg_init_one(&sg, test->buffer + i, 512);
999 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1);
88ae600d
PO		 1000 if (ret)
1001 return ret;
1002 }
1003
1004 return 0;
1005}
1006
1007static int mmc_test_align_read(struct mmc_test_card *test)
1008{
1009 int ret, i;
6b174931 1010 struct scatterlist sg;
88ae600d
PO		 1011
1012 for (i = 1;i < 4;i++) {
6b174931
PO		 1013 sg_init_one(&sg, test->buffer + i, 512);
1014 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0);
88ae600d
PO		 1015 if (ret)
1016 return ret;
1017 }
1018
1019 return 0;
1020}
1021
1022static int mmc_test_align_multi_write(struct mmc_test_card *test)
1023{
1024 int ret, i;
1025 unsigned int size;
6b174931 1026 struct scatterlist sg;
88ae600d
PO		 1027
1028 if (test->card->host->max_blk_count == 1)
1029 return RESULT_UNSUP_HOST;
1030
1031 size = PAGE_SIZE * 2;
1032 size = min(size, test->card->host->max_req_size);
1033 size = min(size, test->card->host->max_seg_size);
1034 size = min(size, test->card->host->max_blk_count * 512);
1035
1036 if (size < 1024)
1037 return RESULT_UNSUP_HOST;
1038
1039 for (i = 1;i < 4;i++) {
6b174931
PO		 1040 sg_init_one(&sg, test->buffer + i, size);
1041 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1);
88ae600d
PO		 1042 if (ret)
1043 return ret;
1044 }
1045
1046 return 0;
1047}
1048
1049static int mmc_test_align_multi_read(struct mmc_test_card *test)
1050{
1051 int ret, i;
1052 unsigned int size;
6b174931 1053 struct scatterlist sg;
88ae600d
PO		 1054
1055 if (test->card->host->max_blk_count == 1)
1056 return RESULT_UNSUP_HOST;
1057
1058 size = PAGE_SIZE * 2;
1059 size = min(size, test->card->host->max_req_size);
1060 size = min(size, test->card->host->max_seg_size);
1061 size = min(size, test->card->host->max_blk_count * 512);
1062
1063 if (size < 1024)
1064 return RESULT_UNSUP_HOST;
1065
1066 for (i = 1;i < 4;i++) {
6b174931
PO		 1067 sg_init_one(&sg, test->buffer + i, size);
1068 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0);
88ae600d
PO		 1069 if (ret)
1070 return ret;
1071 }
1072
1073 return 0;
1074}
1075
1076static int mmc_test_xfersize_write(struct mmc_test_card *test)
1077{
1078 int ret;
1079
1080 ret = mmc_test_set_blksize(test, 512);
1081 if (ret)
1082 return ret;
1083
6b174931 1084 ret = mmc_test_broken_transfer(test, 1, 512, 1);
88ae600d
PO		 1085 if (ret)
1086 return ret;
1087
1088 return 0;
1089}
1090
1091static int mmc_test_xfersize_read(struct mmc_test_card *test)
1092{
1093 int ret;
1094
1095 ret = mmc_test_set_blksize(test, 512);
1096 if (ret)
1097 return ret;
1098
6b174931 1099 ret = mmc_test_broken_transfer(test, 1, 512, 0);
88ae600d
PO		 1100 if (ret)
1101 return ret;
1102
1103 return 0;
1104}
1105
1106static int mmc_test_multi_xfersize_write(struct mmc_test_card *test)
1107{
1108 int ret;
1109
1110 if (test->card->host->max_blk_count == 1)
1111 return RESULT_UNSUP_HOST;
1112
1113 ret = mmc_test_set_blksize(test, 512);
1114 if (ret)
1115 return ret;
1116
6b174931 1117 ret = mmc_test_broken_transfer(test, 2, 512, 1);
88ae600d
PO		 1118 if (ret)
1119 return ret;
1120
1121 return 0;
1122}
1123
1124static int mmc_test_multi_xfersize_read(struct mmc_test_card *test)
1125{
1126 int ret;
1127
1128 if (test->card->host->max_blk_count == 1)
1129 return RESULT_UNSUP_HOST;
1130
1131 ret = mmc_test_set_blksize(test, 512);
1132 if (ret)
1133 return ret;
1134
6b174931 1135 ret = mmc_test_broken_transfer(test, 2, 512, 0);
88ae600d
PO		 1136 if (ret)
1137 return ret;
1138
1139 return 0;
1140}
1141
2661081f
PO		 1142#ifdef CONFIG_HIGHMEM
1143
1144static int mmc_test_write_high(struct mmc_test_card *test)
1145{
1146 int ret;
1147 struct scatterlist sg;
1148
1149 sg_init_table(&sg, 1);
1150 sg_set_page(&sg, test->highmem, 512, 0);
1151
1152 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1);
1153 if (ret)
1154 return ret;
1155
1156 return 0;
1157}
1158
1159static int mmc_test_read_high(struct mmc_test_card *test)
1160{
1161 int ret;
1162 struct scatterlist sg;
1163
1164 sg_init_table(&sg, 1);
1165 sg_set_page(&sg, test->highmem, 512, 0);
1166
1167 ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0);
1168 if (ret)
1169 return ret;
1170
1171 return 0;
1172}
1173
1174static int mmc_test_multi_write_high(struct mmc_test_card *test)
1175{
1176 int ret;
1177 unsigned int size;
1178 struct scatterlist sg;
1179
1180 if (test->card->host->max_blk_count == 1)
1181 return RESULT_UNSUP_HOST;
1182
1183 size = PAGE_SIZE * 2;
1184 size = min(size, test->card->host->max_req_size);
1185 size = min(size, test->card->host->max_seg_size);
1186 size = min(size, test->card->host->max_blk_count * 512);
1187
1188 if (size < 1024)
1189 return RESULT_UNSUP_HOST;
1190
1191 sg_init_table(&sg, 1);
1192 sg_set_page(&sg, test->highmem, size, 0);
1193
1194 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1);
1195 if (ret)
1196 return ret;
1197
1198 return 0;
1199}
1200
1201static int mmc_test_multi_read_high(struct mmc_test_card *test)
1202{
1203 int ret;
1204 unsigned int size;
1205 struct scatterlist sg;
1206
1207 if (test->card->host->max_blk_count == 1)
1208 return RESULT_UNSUP_HOST;
1209
1210 size = PAGE_SIZE * 2;
1211 size = min(size, test->card->host->max_req_size);
1212 size = min(size, test->card->host->max_seg_size);
1213 size = min(size, test->card->host->max_blk_count * 512);
1214
1215 if (size < 1024)
1216 return RESULT_UNSUP_HOST;
1217
1218 sg_init_table(&sg, 1);
1219 sg_set_page(&sg, test->highmem, size, 0);
1220
1221 ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0);
1222 if (ret)
1223 return ret;
1224
1225 return 0;
1226}
1227
64f7120d
AH		 1228#else
1229
1230static int mmc_test_no_highmem(struct mmc_test_card *test)
1231{
1232 printk(KERN_INFO "%s: Highmem not configured - test skipped\n",
1233 mmc_hostname(test->card->host));
1234 return 0;
1235}
1236
2661081f
PO		 1237#endif /* CONFIG_HIGHMEM */
1238
64f7120d
AH		 1239/*
1240 * Map sz bytes so that it can be transferred.
1241 */
fec4dcce 1242static int mmc_test_area_map(struct mmc_test_card *test, unsigned long sz,
64f7120d
AH		 1243 int max_scatter)
1244{
1245 struct mmc_test_area *t = &test->area;
c8c8c1bd 1246 int err;
64f7120d
AH		 1247
1248 t->blocks = sz >> 9;
1249
1250 if (max_scatter) {
c8c8c1bd
AH		 1251 err = mmc_test_map_sg_max_scatter(t->mem, sz, t->sg,
1252 t->max_segs, t->max_seg_sz,
64f7120d 1253 &t->sg_len);
c8c8c1bd
AH		 1254 } else {
1255 err = mmc_test_map_sg(t->mem, sz, t->sg, 1, t->max_segs,
1256 t->max_seg_sz, &t->sg_len);
64f7120d 1257 }
c8c8c1bd
AH		 1258 if (err)
1259 printk(KERN_INFO "%s: Failed to map sg list\n",
1260 mmc_hostname(test->card->host));
1261 return err;
64f7120d
AH		 1262}
1263
1264/*
1265 * Transfer bytes mapped by mmc_test_area_map().
1266 */
1267static int mmc_test_area_transfer(struct mmc_test_card *test,
1268 unsigned int dev_addr, int write)
1269{
1270 struct mmc_test_area *t = &test->area;
1271
1272 return mmc_test_simple_transfer(test, t->sg, t->sg_len, dev_addr,
1273 t->blocks, 512, write);
1274}
1275
1276/*
1277 * Map and transfer bytes.
1278 */
fec4dcce 1279static int mmc_test_area_io(struct mmc_test_card *test, unsigned long sz,
64f7120d
AH		 1280 unsigned int dev_addr, int write, int max_scatter,
1281 int timed)
1282{
1283 struct timespec ts1, ts2;
1284 int ret;
1285
c8c8c1bd
AH		 1286 /*
1287 * In the case of a maximally scattered transfer, the maximum transfer
1288 * size is further limited by using PAGE_SIZE segments.
1289 */
1290 if (max_scatter) {
1291 struct mmc_test_area *t = &test->area;
1292 unsigned long max_tfr;
1293
1294 if (t->max_seg_sz >= PAGE_SIZE)
1295 max_tfr = t->max_segs * PAGE_SIZE;
1296 else
1297 max_tfr = t->max_segs * t->max_seg_sz;
1298 if (sz > max_tfr)
1299 sz = max_tfr;
1300 }
1301
64f7120d
AH		 1302 ret = mmc_test_area_map(test, sz, max_scatter);
1303 if (ret)
1304 return ret;
1305
1306 if (timed)
1307 getnstimeofday(&ts1);
1308
1309 ret = mmc_test_area_transfer(test, dev_addr, write);
1310 if (ret)
1311 return ret;
1312
1313 if (timed)
1314 getnstimeofday(&ts2);
1315
1316 if (timed)
1317 mmc_test_print_rate(test, sz, &ts1, &ts2);
1318
1319 return 0;
1320}
1321
1322/*
1323 * Write the test area entirely.
1324 */
1325static int mmc_test_area_fill(struct mmc_test_card *test)
1326{
c8c8c1bd 1327 return mmc_test_area_io(test, test->area.max_tfr, test->area.dev_addr,
64f7120d
AH		 1328 1, 0, 0);
1329}
1330
1331/*
1332 * Erase the test area entirely.
1333 */
1334static int mmc_test_area_erase(struct mmc_test_card *test)
1335{
1336 struct mmc_test_area *t = &test->area;
1337
1338 if (!mmc_can_erase(test->card))
1339 return 0;
1340
1341 return mmc_erase(test->card, t->dev_addr, test->area.max_sz >> 9,
1342 MMC_ERASE_ARG);
1343}
1344
1345/*
1346 * Cleanup struct mmc_test_area.
1347 */
1348static int mmc_test_area_cleanup(struct mmc_test_card *test)
1349{
1350 struct mmc_test_area *t = &test->area;
1351
1352 kfree(t->sg);
1353 mmc_test_free_mem(t->mem);
1354
1355 return 0;
1356}
1357
1358/*
1359 * Initialize an area for testing large transfers. The size of the area is the
1360 * preferred erase size which is a good size for optimal transfer speed. Note
1361 * that is typically 4MiB for modern cards. The test area is set to the middle
1362 * of the card because cards may have different charateristics at the front
1363 * (for FAT file system optimization). Optionally, the area is erased (if the
1364 * card supports it) which may improve write performance. Optionally, the area
1365 * is filled with data for subsequent read tests.
1366 */
1367static int mmc_test_area_init(struct mmc_test_card *test, int erase, int fill)
1368{
1369 struct mmc_test_area *t = &test->area;
fec4dcce 1370 unsigned long min_sz = 64 * 1024;
64f7120d
AH		 1371 int ret;
1372
1373 ret = mmc_test_set_blksize(test, 512);
1374 if (ret)
1375 return ret;
1376
fec4dcce
AH		 1377 if (test->card->pref_erase > TEST_AREA_MAX_SIZE >> 9)
1378 t->max_sz = TEST_AREA_MAX_SIZE;
1379 else
1380 t->max_sz = (unsigned long)test->card->pref_erase << 9;
c8c8c1bd
AH		 1381
1382 t->max_segs = test->card->host->max_segs;
1383 t->max_seg_sz = test->card->host->max_seg_size;
1384
1385 t->max_tfr = t->max_sz;
1386 if (t->max_tfr >> 9 > test->card->host->max_blk_count)
1387 t->max_tfr = test->card->host->max_blk_count << 9;
1388 if (t->max_tfr > test->card->host->max_req_size)
1389 t->max_tfr = test->card->host->max_req_size;
1390 if (t->max_tfr / t->max_seg_sz > t->max_segs)
1391 t->max_tfr = t->max_segs * t->max_seg_sz;
1392
64f7120d
AH		 1393 /*
1394 * Try to allocate enough memory for the whole area. Less is OK
1395 * because the same memory can be mapped into the scatterlist more than
c8c8c1bd
AH		 1396 * once. Also, take into account the limits imposed on scatterlist
1397 * segments by the host driver.
64f7120d 1398 */
c8c8c1bd
AH		 1399 t->mem = mmc_test_alloc_mem(min_sz, t->max_sz, t->max_segs,
1400 t->max_seg_sz);
64f7120d
AH		 1401 if (!t->mem)
1402 return -ENOMEM;
1403
64f7120d
AH		 1404 t->sg = kmalloc(sizeof(struct scatterlist) * t->max_segs, GFP_KERNEL);
1405 if (!t->sg) {
1406 ret = -ENOMEM;
1407 goto out_free;
1408 }
1409
1410 t->dev_addr = mmc_test_capacity(test->card) / 2;
1411 t->dev_addr -= t->dev_addr % (t->max_sz >> 9);
1412
1413 if (erase) {
1414 ret = mmc_test_area_erase(test);
1415 if (ret)
1416 goto out_free;
1417 }
1418
1419 if (fill) {
1420 ret = mmc_test_area_fill(test);
1421 if (ret)
1422 goto out_free;
1423 }
1424
1425 return 0;
1426
1427out_free:
1428 mmc_test_area_cleanup(test);
1429 return ret;
1430}
1431
1432/*
1433 * Prepare for large transfers. Do not erase the test area.
1434 */
1435static int mmc_test_area_prepare(struct mmc_test_card *test)
1436{
1437 return mmc_test_area_init(test, 0, 0);
1438}
1439
1440/*
1441 * Prepare for large transfers. Do erase the test area.
1442 */
1443static int mmc_test_area_prepare_erase(struct mmc_test_card *test)
1444{
1445 return mmc_test_area_init(test, 1, 0);
1446}
1447
1448/*
1449 * Prepare for large transfers. Erase and fill the test area.
1450 */
1451static int mmc_test_area_prepare_fill(struct mmc_test_card *test)
1452{
1453 return mmc_test_area_init(test, 1, 1);
1454}
1455
1456/*
1457 * Test best-case performance. Best-case performance is expected from
1458 * a single large transfer.
1459 *
1460 * An additional option (max_scatter) allows the measurement of the same
1461 * transfer but with no contiguous pages in the scatter list. This tests
1462 * the efficiency of DMA to handle scattered pages.
1463 */
1464static int mmc_test_best_performance(struct mmc_test_card *test, int write,
1465 int max_scatter)
1466{
c8c8c1bd 1467 return mmc_test_area_io(test, test->area.max_tfr, test->area.dev_addr,
64f7120d
AH		 1468 write, max_scatter, 1);
1469}
1470
1471/*
1472 * Best-case read performance.
1473 */
1474static int mmc_test_best_read_performance(struct mmc_test_card *test)
1475{
1476 return mmc_test_best_performance(test, 0, 0);
1477}
1478
1479/*
1480 * Best-case write performance.
1481 */
1482static int mmc_test_best_write_performance(struct mmc_test_card *test)
1483{
1484 return mmc_test_best_performance(test, 1, 0);
1485}
1486
1487/*
1488 * Best-case read performance into scattered pages.
1489 */
1490static int mmc_test_best_read_perf_max_scatter(struct mmc_test_card *test)
1491{
1492 return mmc_test_best_performance(test, 0, 1);
1493}
1494
1495/*
1496 * Best-case write performance from scattered pages.
1497 */
1498static int mmc_test_best_write_perf_max_scatter(struct mmc_test_card *test)
1499{
1500 return mmc_test_best_performance(test, 1, 1);
1501}
1502
1503/*
1504 * Single read performance by transfer size.
1505 */
1506static int mmc_test_profile_read_perf(struct mmc_test_card *test)
1507{
fec4dcce
AH		 1508 unsigned long sz;
1509 unsigned int dev_addr;
64f7120d
AH		 1510 int ret;
1511
c8c8c1bd 1512 for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
64f7120d
AH		 1513 dev_addr = test->area.dev_addr + (sz >> 9);
1514 ret = mmc_test_area_io(test, sz, dev_addr, 0, 0, 1);
1515 if (ret)
1516 return ret;
1517 }
c8c8c1bd 1518 sz = test->area.max_tfr;
64f7120d
AH		 1519 dev_addr = test->area.dev_addr;
1520 return mmc_test_area_io(test, sz, dev_addr, 0, 0, 1);
1521}
1522
1523/*
1524 * Single write performance by transfer size.
1525 */
1526static int mmc_test_profile_write_perf(struct mmc_test_card *test)
1527{
fec4dcce
AH		 1528 unsigned long sz;
1529 unsigned int dev_addr;
64f7120d
AH		 1530 int ret;
1531
1532 ret = mmc_test_area_erase(test);
1533 if (ret)
1534 return ret;
c8c8c1bd 1535 for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
64f7120d
AH		 1536 dev_addr = test->area.dev_addr + (sz >> 9);
1537 ret = mmc_test_area_io(test, sz, dev_addr, 1, 0, 1);
1538 if (ret)
1539 return ret;
1540 }
1541 ret = mmc_test_area_erase(test);
1542 if (ret)
1543 return ret;
c8c8c1bd 1544 sz = test->area.max_tfr;
64f7120d
AH		 1545 dev_addr = test->area.dev_addr;
1546 return mmc_test_area_io(test, sz, dev_addr, 1, 0, 1);
1547}
1548
1549/*
1550 * Single trim performance by transfer size.
1551 */
1552static int mmc_test_profile_trim_perf(struct mmc_test_card *test)
1553{
fec4dcce
AH		 1554 unsigned long sz;
1555 unsigned int dev_addr;
64f7120d
AH		 1556 struct timespec ts1, ts2;
1557 int ret;
1558
1559 if (!mmc_can_trim(test->card))
1560 return RESULT_UNSUP_CARD;
1561
1562 if (!mmc_can_erase(test->card))
1563 return RESULT_UNSUP_HOST;
1564
1565 for (sz = 512; sz < test->area.max_sz; sz <<= 1) {
1566 dev_addr = test->area.dev_addr + (sz >> 9);
1567 getnstimeofday(&ts1);
1568 ret = mmc_erase(test->card, dev_addr, sz >> 9, MMC_TRIM_ARG);
1569 if (ret)
1570 return ret;
1571 getnstimeofday(&ts2);
1572 mmc_test_print_rate(test, sz, &ts1, &ts2);
1573 }
1574 dev_addr = test->area.dev_addr;
1575 getnstimeofday(&ts1);
1576 ret = mmc_erase(test->card, dev_addr, sz >> 9, MMC_TRIM_ARG);
1577 if (ret)
1578 return ret;
1579 getnstimeofday(&ts2);
1580 mmc_test_print_rate(test, sz, &ts1, &ts2);
1581 return 0;
1582}
1583
c8c8c1bd
AH		 1584static int mmc_test_seq_read_perf(struct mmc_test_card *test, unsigned long sz)
1585{
1586 unsigned int dev_addr, i, cnt;
1587 struct timespec ts1, ts2;
1588 int ret;
1589
1590 cnt = test->area.max_sz / sz;
1591 dev_addr = test->area.dev_addr;
1592 getnstimeofday(&ts1);
1593 for (i = 0; i < cnt; i++) {
1594 ret = mmc_test_area_io(test, sz, dev_addr, 0, 0, 0);
1595 if (ret)
1596 return ret;
1597 dev_addr += (sz >> 9);
1598 }
1599 getnstimeofday(&ts2);
1600 mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2);
1601 return 0;
1602}
1603
64f7120d
AH		 1604/*
1605 * Consecutive read performance by transfer size.
1606 */
1607static int mmc_test_profile_seq_read_perf(struct mmc_test_card *test)
1608{
fec4dcce 1609 unsigned long sz;
c8c8c1bd
AH		 1610 int ret;
1611
1612 for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
1613 ret = mmc_test_seq_read_perf(test, sz);
1614 if (ret)
1615 return ret;
1616 }
1617 sz = test->area.max_tfr;
1618 return mmc_test_seq_read_perf(test, sz);
1619}
1620
1621static int mmc_test_seq_write_perf(struct mmc_test_card *test, unsigned long sz)
1622{
fec4dcce 1623 unsigned int dev_addr, i, cnt;
64f7120d
AH		 1624 struct timespec ts1, ts2;
1625 int ret;
1626
c8c8c1bd
AH		 1627 ret = mmc_test_area_erase(test);
1628 if (ret)
1629 return ret;
1630 cnt = test->area.max_sz / sz;
1631 dev_addr = test->area.dev_addr;
1632 getnstimeofday(&ts1);
1633 for (i = 0; i < cnt; i++) {
1634 ret = mmc_test_area_io(test, sz, dev_addr, 1, 0, 0);
1635 if (ret)
1636 return ret;
1637 dev_addr += (sz >> 9);
64f7120d 1638 }
c8c8c1bd
AH		 1639 getnstimeofday(&ts2);
1640 mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2);
64f7120d
AH		 1641 return 0;
1642}
1643
1644/*
1645 * Consecutive write performance by transfer size.
1646 */
1647static int mmc_test_profile_seq_write_perf(struct mmc_test_card *test)
1648{
fec4dcce 1649 unsigned long sz;
64f7120d
AH		 1650 int ret;
1651
c8c8c1bd
AH		 1652 for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
1653 ret = mmc_test_seq_write_perf(test, sz);
64f7120d
AH		 1654 if (ret)
1655 return ret;
64f7120d 1656 }
c8c8c1bd
AH		 1657 sz = test->area.max_tfr;
1658 return mmc_test_seq_write_perf(test, sz);
64f7120d
AH		 1659}
1660
1661/*
1662 * Consecutive trim performance by transfer size.
1663 */
1664static int mmc_test_profile_seq_trim_perf(struct mmc_test_card *test)
1665{
fec4dcce
AH		 1666 unsigned long sz;
1667 unsigned int dev_addr, i, cnt;
64f7120d
AH		 1668 struct timespec ts1, ts2;
1669 int ret;
1670
1671 if (!mmc_can_trim(test->card))
1672 return RESULT_UNSUP_CARD;
1673
1674 if (!mmc_can_erase(test->card))
1675 return RESULT_UNSUP_HOST;
1676
1677 for (sz = 512; sz <= test->area.max_sz; sz <<= 1) {
1678 ret = mmc_test_area_erase(test);
1679 if (ret)
1680 return ret;
1681 ret = mmc_test_area_fill(test);
1682 if (ret)
1683 return ret;
1684 cnt = test->area.max_sz / sz;
1685 dev_addr = test->area.dev_addr;
1686 getnstimeofday(&ts1);
1687 for (i = 0; i < cnt; i++) {
1688 ret = mmc_erase(test->card, dev_addr, sz >> 9,
1689 MMC_TRIM_ARG);
1690 if (ret)
1691 return ret;
1692 dev_addr += (sz >> 9);
1693 }
1694 getnstimeofday(&ts2);
1695 mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2);
1696 }
1697 return 0;
1698}
1699
88ae600d
PO		 1700static const struct mmc_test_case mmc_test_cases[] = {
1701 {
1702 .name = "Basic write (no data verification)",
1703 .run = mmc_test_basic_write,
1704 },
1705
1706 {
1707 .name = "Basic read (no data verification)",
1708 .run = mmc_test_basic_read,
1709 },
1710
1711 {
1712 .name = "Basic write (with data verification)",
6b174931 1713 .prepare = mmc_test_prepare_write,
88ae600d 1714 .run = mmc_test_verify_write,
6b174931 1715 .cleanup = mmc_test_cleanup,
88ae600d
PO		 1716 },
1717
1718 {
1719 .name = "Basic read (with data verification)",
6b174931 1720 .prepare = mmc_test_prepare_read,
88ae600d 1721 .run = mmc_test_verify_read,
6b174931 1722 .cleanup = mmc_test_cleanup,
88ae600d
PO		 1723 },
1724
1725 {
1726 .name = "Multi-block write",
6b174931 1727 .prepare = mmc_test_prepare_write,
88ae600d 1728 .run = mmc_test_multi_write,
6b174931 1729 .cleanup = mmc_test_cleanup,
88ae600d
PO		 1730 },
1731
1732 {
1733 .name = "Multi-block read",
6b174931 1734 .prepare = mmc_test_prepare_read,
88ae600d 1735 .run = mmc_test_multi_read,
6b174931 1736 .cleanup = mmc_test_cleanup,
88ae600d
PO		 1737 },
1738
1739 {
1740 .name = "Power of two block writes",
6b174931 1741 .prepare = mmc_test_prepare_write,
88ae600d 1742 .run = mmc_test_pow2_write,
6b174931 1743 .cleanup = mmc_test_cleanup,
88ae600d
PO		 1744 },
1745
1746 {
1747 .name = "Power of two block reads",
6b174931 1748 .prepare = mmc_test_prepare_read,
88ae600d 1749 .run = mmc_test_pow2_read,
6b174931 1750 .cleanup = mmc_test_cleanup,
88ae600d
PO		 1751 },
1752
1753 {
1754 .name = "Weird sized block writes",
6b174931 1755 .prepare = mmc_test_prepare_write,
88ae600d 1756 .run = mmc_test_weird_write,
6b174931 1757 .cleanup = mmc_test_cleanup,
88ae600d
PO		 1758 },
1759
1760 {
1761 .name = "Weird sized block reads",
6b174931 1762 .prepare = mmc_test_prepare_read,
88ae600d 1763 .run = mmc_test_weird_read,
6b174931 1764 .cleanup = mmc_test_cleanup,
88ae600d
PO		 1765 },
1766
1767 {
1768 .name = "Badly aligned write",
6b174931 1769 .prepare = mmc_test_prepare_write,
88ae600d 1770 .run = mmc_test_align_write,
6b174931 1771 .cleanup = mmc_test_cleanup,
88ae600d
PO		 1772 },
1773
1774 {
1775 .name = "Badly aligned read",
6b174931 1776 .prepare = mmc_test_prepare_read,
88ae600d 1777 .run = mmc_test_align_read,
6b174931 1778 .cleanup = mmc_test_cleanup,
88ae600d
PO		 1779 },
1780
1781 {
1782 .name = "Badly aligned multi-block write",
6b174931 1783 .prepare = mmc_test_prepare_write,
88ae600d 1784 .run = mmc_test_align_multi_write,
6b174931 1785 .cleanup = mmc_test_cleanup,
88ae600d
PO		 1786 },
1787
1788 {
1789 .name = "Badly aligned multi-block read",
6b174931 1790 .prepare = mmc_test_prepare_read,
88ae600d 1791 .run = mmc_test_align_multi_read,
6b174931 1792 .cleanup = mmc_test_cleanup,
88ae600d
PO		 1793 },
1794
1795 {
1796 .name = "Correct xfer_size at write (start failure)",
1797 .run = mmc_test_xfersize_write,
1798 },
1799
1800 {
1801 .name = "Correct xfer_size at read (start failure)",
1802 .run = mmc_test_xfersize_read,
1803 },
1804
1805 {
1806 .name = "Correct xfer_size at write (midway failure)",
1807 .run = mmc_test_multi_xfersize_write,
1808 },
1809
1810 {
1811 .name = "Correct xfer_size at read (midway failure)",
1812 .run = mmc_test_multi_xfersize_read,
1813 },
2661081f
PO		 1814
1815#ifdef CONFIG_HIGHMEM
1816
1817 {
1818 .name = "Highmem write",
1819 .prepare = mmc_test_prepare_write,
1820 .run = mmc_test_write_high,
1821 .cleanup = mmc_test_cleanup,
1822 },
1823
1824 {
1825 .name = "Highmem read",
1826 .prepare = mmc_test_prepare_read,
1827 .run = mmc_test_read_high,
1828 .cleanup = mmc_test_cleanup,
1829 },
1830
1831 {
1832 .name = "Multi-block highmem write",
1833 .prepare = mmc_test_prepare_write,
1834 .run = mmc_test_multi_write_high,
1835 .cleanup = mmc_test_cleanup,
1836 },
1837
1838 {
1839 .name = "Multi-block highmem read",
1840 .prepare = mmc_test_prepare_read,
1841 .run = mmc_test_multi_read_high,
1842 .cleanup = mmc_test_cleanup,
1843 },
1844
64f7120d
AH		 1845#else
1846
1847 {
1848 .name = "Highmem write",
1849 .run = mmc_test_no_highmem,
1850 },
1851
1852 {
1853 .name = "Highmem read",
1854 .run = mmc_test_no_highmem,
1855 },
1856
1857 {
1858 .name = "Multi-block highmem write",
1859 .run = mmc_test_no_highmem,
1860 },
1861
1862 {
1863 .name = "Multi-block highmem read",
1864 .run = mmc_test_no_highmem,
1865 },
1866
2661081f
PO		 1867#endif /* CONFIG_HIGHMEM */
1868
64f7120d
AH		 1869 {
1870 .name = "Best-case read performance",
1871 .prepare = mmc_test_area_prepare_fill,
1872 .run = mmc_test_best_read_performance,
1873 .cleanup = mmc_test_area_cleanup,
1874 },
1875
1876 {
1877 .name = "Best-case write performance",
1878 .prepare = mmc_test_area_prepare_erase,
1879 .run = mmc_test_best_write_performance,
1880 .cleanup = mmc_test_area_cleanup,
1881 },
1882
1883 {
1884 .name = "Best-case read performance into scattered pages",
1885 .prepare = mmc_test_area_prepare_fill,
1886 .run = mmc_test_best_read_perf_max_scatter,
1887 .cleanup = mmc_test_area_cleanup,
1888 },
1889
1890 {
1891 .name = "Best-case write performance from scattered pages",
1892 .prepare = mmc_test_area_prepare_erase,
1893 .run = mmc_test_best_write_perf_max_scatter,
1894 .cleanup = mmc_test_area_cleanup,
1895 },
1896
1897 {
1898 .name = "Single read performance by transfer size",
1899 .prepare = mmc_test_area_prepare_fill,
1900 .run = mmc_test_profile_read_perf,
1901 .cleanup = mmc_test_area_cleanup,
1902 },
1903
1904 {
1905 .name = "Single write performance by transfer size",
1906 .prepare = mmc_test_area_prepare,
1907 .run = mmc_test_profile_write_perf,
1908 .cleanup = mmc_test_area_cleanup,
1909 },
1910
1911 {
1912 .name = "Single trim performance by transfer size",
1913 .prepare = mmc_test_area_prepare_fill,
1914 .run = mmc_test_profile_trim_perf,
1915 .cleanup = mmc_test_area_cleanup,
1916 },
1917
1918 {
1919 .name = "Consecutive read performance by transfer size",
1920 .prepare = mmc_test_area_prepare_fill,
1921 .run = mmc_test_profile_seq_read_perf,
1922 .cleanup = mmc_test_area_cleanup,
1923 },
1924
1925 {
1926 .name = "Consecutive write performance by transfer size",
1927 .prepare = mmc_test_area_prepare,
1928 .run = mmc_test_profile_seq_write_perf,
1929 .cleanup = mmc_test_area_cleanup,
1930 },
1931
1932 {
1933 .name = "Consecutive trim performance by transfer size",
1934 .prepare = mmc_test_area_prepare,
1935 .run = mmc_test_profile_seq_trim_perf,
1936 .cleanup = mmc_test_area_cleanup,
1937 },
1938
88ae600d
PO		 1939};
1940
a650031a 1941static DEFINE_MUTEX(mmc_test_lock);
88ae600d 1942
fd8c326c 1943static void mmc_test_run(struct mmc_test_card *test, int testcase)
88ae600d
PO		 1944{
1945 int i, ret;
1946
1947 printk(KERN_INFO "%s: Starting tests of card %s...\n",
1948 mmc_hostname(test->card->host), mmc_card_id(test->card));
1949
1950 mmc_claim_host(test->card->host);
1951
1952 for (i = 0;i < ARRAY_SIZE(mmc_test_cases);i++) {
fd8c326c
PO		 1953 if (testcase && ((i + 1) != testcase))
1954 continue;
1955
88ae600d
PO		 1956 printk(KERN_INFO "%s: Test case %d. %s...\n",
1957 mmc_hostname(test->card->host), i + 1,
1958 mmc_test_cases[i].name);
1959
1960 if (mmc_test_cases[i].prepare) {
1961 ret = mmc_test_cases[i].prepare(test);
1962 if (ret) {
1963 printk(KERN_INFO "%s: Result: Prepare "
1964 "stage failed! (%d)\n",
1965 mmc_hostname(test->card->host),
1966 ret);
1967 continue;
1968 }
1969 }
1970
1971 ret = mmc_test_cases[i].run(test);
1972 switch (ret) {
1973 case RESULT_OK:
1974 printk(KERN_INFO "%s: Result: OK\n",
1975 mmc_hostname(test->card->host));
1976 break;
1977 case RESULT_FAIL:
1978 printk(KERN_INFO "%s: Result: FAILED\n",
1979 mmc_hostname(test->card->host));
1980 break;
1981 case RESULT_UNSUP_HOST:
1982 printk(KERN_INFO "%s: Result: UNSUPPORTED "
1983 "(by host)\n",
1984 mmc_hostname(test->card->host));
1985 break;
1986 case RESULT_UNSUP_CARD:
1987 printk(KERN_INFO "%s: Result: UNSUPPORTED "
1988 "(by card)\n",
1989 mmc_hostname(test->card->host));
1990 break;
1991 default:
1992 printk(KERN_INFO "%s: Result: ERROR (%d)\n",
1993 mmc_hostname(test->card->host), ret);
1994 }
1995
1996 if (mmc_test_cases[i].cleanup) {
1997 ret = mmc_test_cases[i].cleanup(test);
1998 if (ret) {
1999 printk(KERN_INFO "%s: Warning: Cleanup "
2000 "stage failed! (%d)\n",
2001 mmc_hostname(test->card->host),
2002 ret);
2003 }
2004 }
2005 }
2006
2007 mmc_release_host(test->card->host);
2008
2009 printk(KERN_INFO "%s: Tests completed.\n",
2010 mmc_hostname(test->card->host));
2011}
2012
2013static ssize_t mmc_test_show(struct device *dev,
2014 struct device_attribute *attr, char *buf)
2015{
2016 mutex_lock(&mmc_test_lock);
2017 mutex_unlock(&mmc_test_lock);
2018
2019 return 0;
2020}
2021
2022static ssize_t mmc_test_store(struct device *dev,
2023 struct device_attribute *attr, const char *buf, size_t count)
2024{
265cdc90 2025 struct mmc_card *card = mmc_dev_to_card(dev);
88ae600d 2026 struct mmc_test_card *test;
fd8c326c 2027 int testcase;
88ae600d 2028
fd8c326c
PO		 2029 testcase = simple_strtol(buf, NULL, 10);
2030
88ae600d
PO		 2031 test = kzalloc(sizeof(struct mmc_test_card), GFP_KERNEL);
2032 if (!test)
2033 return -ENOMEM;
2034
2035 test->card = card;
2036
2037 test->buffer = kzalloc(BUFFER_SIZE, GFP_KERNEL);
2661081f
PO		 2038#ifdef CONFIG_HIGHMEM
2039 test->highmem = alloc_pages(GFP_KERNEL | __GFP_HIGHMEM, BUFFER_ORDER);
2040#endif
2041
2042#ifdef CONFIG_HIGHMEM
2043 if (test->buffer && test->highmem) {
2044#else
88ae600d 2045 if (test->buffer) {
2661081f 2046#endif
88ae600d 2047 mutex_lock(&mmc_test_lock);
fd8c326c 2048 mmc_test_run(test, testcase);
88ae600d
PO		 2049 mutex_unlock(&mmc_test_lock);
2050 }
2051
2661081f
PO		 2052#ifdef CONFIG_HIGHMEM
2053 __free_pages(test->highmem, BUFFER_ORDER);
2054#endif
88ae600d
PO		 2055 kfree(test->buffer);
2056 kfree(test);
2057
2058 return count;
2059}
2060
2061static DEVICE_ATTR(test, S_IWUSR | S_IRUGO, mmc_test_show, mmc_test_store);
2062
2063static int mmc_test_probe(struct mmc_card *card)
2064{
2065 int ret;
2066
63be54ce 2067 if (!mmc_card_mmc(card) && !mmc_card_sd(card))
0121a982
PO		 2068 return -ENODEV;
2069
88ae600d
PO		 2070 ret = device_create_file(&card->dev, &dev_attr_test);
2071 if (ret)
2072 return ret;
2073
60c9c7b1
PO		 2074 dev_info(&card->dev, "Card claimed for testing.\n");
2075
88ae600d
PO		 2076 return 0;
2077}
2078
2079static void mmc_test_remove(struct mmc_card *card)
2080{
2081 device_remove_file(&card->dev, &dev_attr_test);
2082}
2083
2084static struct mmc_driver mmc_driver = {
2085 .drv = {
2086 .name = "mmc_test",
2087 },
2088 .probe = mmc_test_probe,
2089 .remove = mmc_test_remove,
2090};
2091
2092static int __init mmc_test_init(void)
2093{
2094 return mmc_register_driver(&mmc_driver);
2095}
2096
2097static void __exit mmc_test_exit(void)
2098{
2099 mmc_unregister_driver(&mmc_driver);
2100}
2101
2102module_init(mmc_test_init);
2103module_exit(mmc_test_exit);
2104
2105MODULE_LICENSE("GPL");
2106MODULE_DESCRIPTION("Multimedia Card (MMC) host test driver");
2107MODULE_AUTHOR("Pierre Ossman");
kernel source for telekom puls (alcatel/mediatek)